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Marquise|Natural|GIA

1.01ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 1567186401

Certificate GIA 1567186401

Diamond specifications and retailer prices

From £1,910 GBP
As of November 4, 2026
Save £1,724 GBP (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,635 GBP at Helzberg Diamonds · As of November 4, 2026
View at Helzberg Diamonds

About this 1.01ct natural marquise diamond

This 1.01ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1567186401. Listed at 14 retailers as of November 4, 2026, with prices from £1,910 to £3,635, a £1,724 spread on the same certified stone. Helzberg Diamonds lists it at £3,635. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.01
Carat
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.84°
Pavilion angle39.7°
OriginNatural
Grading LabGIA
CertificateGIA 1567186401
Dimensions9.95 × 5.19 × 3.34 mm
L/W Ratio1.92
Culet sizeNone
Top View
9.95 mm5.19 mm1.01 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1567186401
Side View
Table 57.0%Crown 39.84°Girdle: MED-THKPavilion 39.7°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £3,635 GBP|Low: £1,910 GBP|High: £3,776 GBP|Avg: £2,509 GBP|-3.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 11£1,910 GBP
Retailer 4£1,967 GBP
Retailer 8£1,997 GBP
Retailer 6£2,120 GBP
Retailer 5£2,155 GBP
Retailer 7£2,219 GBP
Retailer 3£2,301 GBP
Retailer 13£2,466 GBP
Retailer 10£2,482 GBP
Retailer 14£2,539 GBP
Retailer 2£2,540 GBP
Retailer 9£2,651 GBP
Retailer 12£3,436 GBP
Helzberg Diamonds£3,635 GBP

28 data points across 14 retailers

14 retailers£1,910 GBP to £3,635 GBP

A
Cheapest Retailer
-
£1,910 GBP
A
Retailer 2
-
£1,967 GBP
View
A
Retailer 3
-
£1,997 GBP
View
A
Retailer 4
-
£2,120 GBP
View
A
Retailer 5
-
£2,155 GBP
View
A
Retailer 6
-
£2,219 GBP
View
A
Retailer 7
-
£2,301 GBP
View
A
Retailer 8
-
£2,466 GBP
View
A
Retailer 9
-
£2,482 GBP
View
A
Retailer 10
-
£2,539 GBP
View
A
Retailer 11
-
£2,540 GBP
View
B+
Retailer 12
-
£2,651 GBP
View
B+
Retailer 13
-
£3,436 GBP
View
Most Expensive
B+
Helzberg Diamonds
XZRHLMNHOMKGH · Nov 4
£3,635 GBP
$4,892 USD
View
13 more retailers have this diamond
Prices start from £1,910 GBPSave up to £1,724 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.01ct Marquise
£1,910 GBP